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# probability of discrete random variable

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You are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:

Probability .333 .500 0 .167
number correct 0 1 2 3

What is the probability you get:

a) exactly one correct
b) at least one correct
c) exactly two correct
d) compute the mean, variance and standard deviation of this distribution

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https://brainmass.com/statistics/probability/probability-discrete-random-variable-118602

#### Solution Preview

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you are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:

Probablity .333 .500 0 .167
number correct 0 1 ...

#### Solution Summary

The solution shows how to calculate the probability, mean and variance of discrete random variable.

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